AS Poissy (French: Amicale Sportive de Poissy) was a French football club based in Poissy (Yvelines). It was founded in 1904, and liquidated in 2023. They played at the Stade Léo Lagrange, which has a capacity of 3,500. The colours of the club were yellow and blue. AS Poissy played one season in Ligue 2, in 1977–78.
The AS Poissy training centre received the "Jeunes Excellence" Label in 2015, among 192 French clubs, and in 2016 the "Jeunes Élite" Label awarded by the French Football Federation. This quality label was awarded to only 76 French clubs.
Young and senior teams played the highest regional and national levels for many years. Many professional players played for the club like M'Baye Niang, Gérard Soler, Fabien Raddas or Diallo Guidileye.
The club was founded in the year 1904 in Poissy. In 1968 the club merged with the AS Simca, keeping the AS Poissy name. The club reached the round of 16 of the Coupe de France in 1972.
The club gained promotion to the second tier of French football in 1977, remaining just one season. From 2015 to 2023 the club played in the fourth tier. In the summer of 2023 the club were administratively relegated to Régional 1 by the DNCG for financial reasons.
On 4 August 2023, the Court of Versailles order the liquidation by law of AS Poissy. A new club will be formed in Yvelines, named Poissy FC, which will not be allowed to enter competition above the level of Régional 3 (the eighth tier of French football).